Bio353- Cell Biology Exam Questions (85 Terms) With Verified Definitions Updated 2024

How do enzymes speed up chemical reactions? {Ans: They lower the activation energy (EA) required for a reaction.}Antisense RNA is a single stranded RNA that is complementary to a protein coding messenger RNA (mRNA). How might antisense RNA affect translation? {Ans: It can prevent identification of the start codon by the ribosome.}During regulation of gene expression in prokaryotes, repressors bind to ________ to inhibit gene transcription. {Ans: operators}Which one of the following is NOT a type of RNA processing that occurs in eukaryotes? {Ans: Removal of exons}In general, proteins found in the cytosol fold so that {Ans: Polar amino acids are found primarily on the surface of the protein.}The process of engulfing a bacterium with a portion of the plasma membrane is called {Ans: phagocytosis}The Sodium potassium pump transports 3 sodium ions for every 2 potassium ions. What is the net result of sodium potassium pump function? {Ans: Potassium is at a higher concentration inside the cell compared to outside the cell}What causes depolarization of the membrane during an action potential? {Ans: Movement of Na+ into the cell}The DNA of a prokaryotic cell is located primarily in the {Ans: nucleoid}The G1